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. JOHN SUTTON, OF NEW YORK, N. Y.

LUBRICATOR FOR; STEAM MACHINERY.

Specication'of Letters Patent No. 12,290, dated January 23, 1855'.

To all 'whom t may concern:

Be it known that I, JOHN SUTTON, yof the city, county, and State of NewYork, have invented la new and useful improvement in greasefeeders forlubricating the cylinders, valve-seats, and other parts of steamengines,and other apparatus subject to fan internal pressure greater than theatmosphere without stopping their operation; and I do hereby declarethat the following is a full, clear, and exact description of the same,reference being had to the accompanying drawing, forming part of thisspecication, in which- Figure 1, is a section through the center ofagrease cock constructed according to this invention, which, todistinguish it from another invention of mine for the same purpose Iwill denominate No. 2. Fig. 2, is an outside view of the piston detachedfrom the feeder.

Similar letters of reference indicate corresponding parts'in both gures.

This invention consists firstly in the arrangement of the cylinder andpiston which is employed to inject the oil or grease into the part ofthe engine or apparatus requiring to be lubricated, within or inthebottom of the reservoir or vessel containing the y oil or'grease,whereby the feeder is rendered much more compact and simple than otherfeeders acting on a similar principle.

It consists secondly in a certain arrangement of valves whereby thefeeder is charged with oil or grease and discharged into the engine orapparatus by simply moving its piston once back and forth.

To enable those skilled in the art to make and use my invention I willproceed to describe its construction and operation.

y A, is a reservoir; B, the cylinder and C, the piston. The reservoir issupplied with oil at the top,through openings o, Zn, in the bottom of asmall cup a, into which the oil is poured. This cup forms a covering toprotect the oil in the reservoir from dirt. The cylinder B may be castwith or tted into the reservoir, being placed in the center of thebottom. It'may stand up within the body of the reservoir as'shown in thedrawing, or be entirely below it, butl is preferable that it shouldstand up some distance above the bottom of the reservoir in order that aspace may be left around it for the collection of sediment, to preventany dirt entering the cylinder to interfere with the valves v or toinjure the surfaces to be lubricated. The upper end which enters thereservoir is open, and from the lower end leads the passage c, throughwhich oil is ejected from the reservoir against the pressure of steam orother motive agent. At the entrance to the passage c, there is a valved, which will be closed by the pressure of steam, but has a spring e,applied to it, to prevent its opening and allowing the escape of oilwhen the engine or apparatus is not in operation. The piston C,.ishollow and furnished with a valve f, which opens downward or toward' thedischarge end of the cylinder. This valve has a spring g, applied toclose it. The piston rod It, works through a guide i, in the center ofthe top of the reservoir and is furnished with a knob or handle outside.At asuitable distance above the piston, an india rubber or other springj, is attached to the rod in order to serve as an elastic stop to arrestthe upward movement or retraction of the piston. The guide z', isintended to serve as a vent in filling the reservoir and therefore itshould reach above the top of the cup a, and the piston rod should fitit easily. l

The oil is fed by simply :retracting the piston by hand from thedischarge end to-' ward the entrance of the cylinder and then returningit. .The piston is shown in Fig. A

1, in black outline in the act of retraction and in red outline in theact of return-ing. The retraction of the piston causes a vacuum to beformed in front of or below it and thus causes the valve f, to open, andthe oil to rush from the reservoir through the piston, as indicated bythe black arrows in Fig. l, the valve d, in the mean time remainingclosed. The return of the piston causes the valve f toclose and thevalve d, to open, and the oil below or in front of the piston to beejected through the passage c.

The arrangement of the cylinder and piston of the feeder within thereservoir with a guide for the piston rod in the top of the reservoirnot' only makes the feeder more compact but\` simplifies theconstruction. The arrangement of the two valves in the piston anddischarge end ofthe cylinder enables the oil to be fed while the engineis running by one movement back and forth of the hand of the engineerwhich in locomotive engines is a great advantage. All other feeders ,fora similar purpose known kto me require at least two movements either inthe piston opening toward the discharge end of the cylinder, and a valved, in the discharge end of the cylinder, opening against and closingwith the pressure of the steam or motive agent substantially asdescribed, whereby it is caused to be only necessary to move the pistononce back and forth to charge and discharge the feeding cylinder, andthe lubrication is effected more quickly and With less trouble to theengineer.

JOHN SUTTON. Vitnesses:

GEO. W. ARMSTRONG, EDWARD CLARKE.

